The City of Santa Monica has put together a free AltBuild Water event that provides all the tools and resources needed to make the shift at home. It’s open from 10 a.m. to 3 p.m. today at the Santa Monica College Bundy Campus, 3171 S. Bundy Drive, Los Angeles.

Learn how to install an irrigation kit, replace a lawn with a native or low-water landscape, compost, catch rain and take advantage of the many rebates available through regional utilities. As part of the events, TreePeople will celebrate 40 years of expanding the tree canopy over Los Angeles.

Andy Lipkis, TreePeople’s founder and president, will join the lineup of scheduled speakers that includes Lili Singer, director of special projects and adult education at the Theodore Payne Foundation for Wildflowers and Native Plants; Beth Pratt, California director of the National Wildlife Federation; and Larry Santoyo, ecological designer and senior planner at EarthFlow Design Works.

Admission, workshops and speaker programs are free. Parking is $10. For more information, call 310-390-2930 or go to www.altbuildexpo.com.